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  • Title: Infrared (1.2-1.6 microm) luminescence in Cr4+:Yb3Al5O12 single crystal with 940 nm diode pumping.
    Author: Xu X, Zhao Z, Song P, Zhou G, Xu J, Deng P, Bourdet G, Chanteloup JC, Zou JP, Fulop A.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2005 Sep; 61(11-12):2444-7. PubMed ID: 16043036.
    Abstract:
    Infrared (1.2-1.6 microm) luminescence in a ytterbium aluminium garnet (YbAG) crystal, doped with Cr (0.05at.%) ions, was investigated under CW laser diode pumping (lambda=940 nm). The Cr4+ emission band was observed with its peak at 1.34 microm and measured to be about 1.3 times with respect to Yb3+ IR luminescence (lambda=1.03 microm). We demonstrate that for the excitation wavelength of 940 nm Yb3+ ions act as sensitizers of the 3B2(3T2)-3B1(3A2) emission of Cr4+ ions. This crystal is promising as a high-efficient system for tunable laser (1.2-1.6 microm) output.
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